Fix missing words (#20)

* Update README.md

add missing word

* Update README.md

README.md

@@ -26,7 +26,7 @@ These calls serve to discuss progress of projects, current issues participants a
 
 #### Office hours
 
-In addition to the weekly standup calls, we hold Office Hours calls which can be focused on specific topics proposed in advance. Find the upcoming call agenda in [Issues](https://github.com/eth-protocol-fellows/cohort-five/issues). Anybody can propose topic for this call by in its tracking issue. Office Hours are regularly happening on every Tuesday, 15:00 UTC.
+In addition to the weekly standup calls, we hold Office Hours calls which can be focused on specific topics proposed in advance. Find the upcoming call agenda in [Issues](https://github.com/eth-protocol-fellows/cohort-five/issues). Anybody can propose topics for this call by commenting on its tracking issue. Office Hours are regularly happening on every Tuesday, 15:00 UTC.
 
 If you need any further assistance, contact cohort organizers @joshdavislight @taxmeifyoucan